Cleaning device for abrading surfaces



March 26, 1929. ROBJN 707,067

CLEANING DEVICE FOR ABRADING SURFACES Filed Aug. 26, 1926 2 Sheets-Sheet 1 Snow H010 MHIHObZa March 26, 1929. M. A. ROBIN 1,707,057

CLEANING DEVICE FOR ABRADING SURFACES Filed Aug. 26, 1926 2 SheetS -Sheet 2 Patented Mar. 26, 1929.

MARGEL A. ROBIN, OF PORT-AU-PRINCE, HAITI, INDIES.

CLEANING DEVICE FOR ABIRADING SURFACES.

Application filed August 26, 1926. Serial No. 131,689.

The invention has reference to a device used for reconditioning pencil and ink eras rs using; abrading material, having particular reference to means for cleaning the ubradin ur ace of detritus left thereon in recond ship the eras'iers by abrasive action and has its object the provision of means for brushing the abrading surface to remove particles of rubber and other materi al left thereon.

smother object is to provide. a novel con slruction wherein the abrador comprises a cover for the device and movement of which will control the position and operation of the ahrador-cleaning brush.

Still another object is to provide a construction wherein the abrader has novel means coacting with the brush or its frame to normally prevent movement of the abr er.

Additional objects and advantages will be pointed out and become apparent from a consideration of the description following taken in connection with accompanying drawings illustrating an operative embodiment.

In said drawingsz- Figure 1 is a side elevation of the device;

Figure 2 is an end elevation;

Figure 3 is a plan view;

Figure 4: is a longitudinal. sectional View through the device showing; the abrader detached from the brush frame and its coaction with the latter and brush in the cleaning of the abrader;

Figure 5 is a detail elevation of the brush and its frame; I

Figure 6 is a perspective view of the abrader;

Figure 7 is a perspective View illustrating; the operating handle for the abrader.

Referring specifically to the drawings, a suitable casing 10 is provided which may have supporting teeth 1.1, if desired. This may be of any approved size and shape, for instance being rectangular as shown and open at the top. The side walls of the casing may be partly removed and provided with windows 12 of suitable transparent material. A suitable drawer 13 is slidably disposed in the casing, being removable through one end thereof and having handles or grips i lat that end. This drawer 13 p is designed to receive material which is removed from erasers when recon-' ditioninn' the same. The drawer 13 als open at the top.

Slidably mounted at the top of the casing 10 and covminp; the same and the drawer 13 is an abradcr 1.5 which may comprise a plate 16 on the upper surface of which an abrading surface is pr ruled in any suitable man nor as by glu ng a strip of sandoapcr or emery paper thereto, the parts preferably beins so proportioned thatlhe upper surface of the abrader 16 will be flush with the upper surface of the surrounding v-ralls of the receptacle or casing 10. Midway of its sides, the abrader has a depending cam plate 17, extending longitudinally, and having its forvmrd end arrang g l rearwardly of the forward end of the abrader and preferably inclining upwardly and towards that end. i

Depending centrally from the plate 16 are studs 18 and 19. preferably being rmnovably secured thereto in any desired manner. it. handle whichniay be used in reciprocating the abrader is shown in the form of a lever 20 pivoted by a pin 21 to the stud 3.8. it. leaf spring 22 is fastened. to the stud 19 and engages the under surface of the lever 20 to normally urge the lever upwardly into ongagement with the plate 16. A latch pin 23 extends vertically from the lever 20 forwardly of the plate 16 and rises above that plate. 1

.At the forward corners of the casing 10 bars 2% may be secured as by bolts 25 or any other suitable means. The bars 24: extend a considerable distance above casing 1.0 and are joined by a tie rod 26 at the top. The facing surfaces of the bars 24: have longi tudinal grooves 26 therein in which side members 27 of a vertically movable frame 28 are slidably disposed. Said frame 28 is completed by a cross red 29 and the back 30 of a brush 31, parallel thereto and connected to the side members 27. The back of brush 31 is rigid and wire bristles or the equivalent depend therefrom. Rod 29 is disposed at the front of the casing 10 and below the plate 16, which latter overlaps such rod. The frame 28 is urged upwardly, to an extent limited by the engagement of rod 29 withthe plate 16, by contractile coil springs 32 fastened to the back 80 and to the rod. 26. Extending rearwardly from the back 30 is a catchmember 8st provided with an aperture 35 whichmay be engaged by the latch (ill ' erator. As the :orward end 0 pin 23, normally, in order to hold the abrader against movement relatively to the remainder. of the device.

The front of drawer 13 is provided with a vertical slot 19f which accommodates the "wall 17 and permits movement thereof.

Normally all of the parts are secured together against relative movement and accordinglythe user or operator may hold a rubber or equivalent eraser in his harul and reciprocate or move the same back and forth over the abrasive surface of plate 16, thus removing a portion of the eraser and render ing the latter clean for subsequei i :e, This act-ion may be followed periodically that the eruserjmay be kept clean at all'times course accumulate on theabrader l6 and in orderto remove the same, the handle or lever 20 is depressed thusmoving pin 23 out of the aperture 35, releasing the abrader 16 so that it may be pulled ward the opthe ccm'plate 17 is spaced from the fOrWYELlLlGDLl of the plate '16, the brush 31 vill not be moved until the pin 23' is at a distance from the plate .Gutward movement of the handle plate 16 so that the mater-iii inbefore 7 described may be 20 and plate 16 gsadually moves the cam platel'? into engagement with the rod 29, thus depressingor movu frame 28 downwardly and causingthe hr .cs 33 L'O'QFWZIQO the sandpaper or abradng surface of the accumulated thereon will be brushed therefrom or removed into the drawer 13 which becomes er:- posed of course as the platelG is moved outwardly. The drawer lg'inay be emptied at desired times.

One or more, contractile springs 36 may be 1 stoned to casing 10 and the abrader to urge the latterto drawer-closing position.

It will-be understood that tee device hereused not onlyto 01cm rubber erasers but also to sharpen them for etlicientei sure of letters in type 1. A deviceof the class described com prising a casing, a drawer therein, an abradr constituting a cover for the casing and dawer movable relatively there .abrader into the drawer, means-on the ing to effect -s1iclr1'e1noval, and means to connect the abrader to the first mentioned to hold it in covering position; I

j 1 2. A device of'the class described comprisinga casing, an ab rader constituting a cover therefor and movable relatively thereto, a

i bruslrto removefabraded material from the I to whereby abraded"inaterial'may be removed from the abrader into the casing, and means to move said brush to operative position through movement of the abrader.

3. A device of the class described comprising a casing, an abrader constituting a cover therefor and movable relatively thereto, a brush to remove abraded material from the ahradcr into the casing, means to move said brush to operative position through movement of the abradcr, and menus to secure the abrader to the brush to hold itin covering position.

f. A device of the class described comprising a casing, an abruder serving as :1 cover therefor and movable relatively fluu'cto a frame mounted to slide toward and from the abruder. a brush carried by the frame to engage the abradcr to remove material therefrom into the casing. and, (he abrader having a cam plate dei'icnding therefrom and directly engaging the frame to move the brush into engagement with the abrader.

A device of the class described comp ing a cas ng an ubradcr serving as a cover therefor, a frame movable through movement of the ab 'ader, a brush carried by the rame to engage the abrudcr to remove material therefrom into the casing through said movement, a lever on the abrader conouting a handle therefor, and means on the lever coacting with the frame to normally secure the abrader against movement rehtively to the casing.

G. A device of the class described comprising a casing, a drawer therein provided "ith a slot in an end 'all thereof, :1 plate forming an abrader and covering the cusing and drawer, said plate having :1 depending cam plate movable through said slot, studs depending from the plate forwardly of the casing and drawer, an operating lever pivoted to one of the studs, spring means secured to the other stud and urging upward movement of the lever, :1 latch pin on the lever, bars rising from the front corners of the casing, said bars having grooves in their facing surfaces, a frame slidublo in said grooves and including :1 cross rod disposed below the plate, a brush carried by the frame above the plate and having a rearwardlv extending catch engagcable by said pin to normally hold the plate against movement relatively to the casing, and said cum plate being engageable with said rod to depress said frame and move the brush into engagement with the plate to remove abradcd material therefrom into the drawer.

In testimony whereof I .llllX my signature.

MAROEL A. ROBIN. 

